My Bella just went under for her spay yesterday and she did great, I picked her up this morning and she was so happy to see me, she looks a bit tired and keeps laying her head on my chest (so cute) but other than that she is doing really well.
Ellie will do great, I know it is hard not to be worried, but just try to relax...
Before you know it, she will be home and running around like normal!! You and Ellie will be in my thoughts!